AC180JNHFKH/SA User Manual

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Purging the unit

From factory the unit is supplied and set with a pre-charge of nitrogen gas. (insert gas) Therefore, all insert gas must be purged

before connecting the assembly piping.

Unscrew the pinch pipe at the end of each refrigerant pipe.

RESULT : All inert gas escapes from the indoor unit.

• Topreventdirtorforeignobjectsfromgettingintothepipesduring

installation, do NOT remove the pinch pipe completely until you are

ready to connect the piping.

• Connecttheindoorandoutdoorunitsusingpipeswithared

connections(not supplied). For the lines, use insulated, unwelded,

degreased and deoxidized copper pipe (Cu DHP type to ISO 1337 or

UNI EN 12735-1), suitable for operating pressures of at least 4200kPa

and for a burst pressure of at least 20700kPa. Copper pipe for hydro-

sanitary applications is completely unsuitable.

• Forsizingandlimits(heightdierence,linelength,max.bends,

refrigerant charge, etc.) see the outdoor unit installation manual.

•Allrefrigerantconnectionmustbeaccessible,inordertopermiteither

unit maintenance or removing it completely.

 The designs and shape are subject

to change according to the model.

G_1

CAUTION

NOTE



HHXEG



JNHFKH

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User Manual - Page 27